140331223243421 has 8 divisors (see below), whose sum is σ = 165908835361920. Its totient is φ = 116136184753008.

The previous prime is 140331223243397. The next prime is 140331223243439. The reversal of 140331223243421 is 124342322133041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140331223243421 - 2⁶ = 140331223243357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140331223243441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345643406801 + ... + 345643407206.

It is an arithmetic number, because the mean of its divisors is an integer number (20738604420240).

Almost surely, 2^{140331223243421} is an apocalyptic number.

It is an amenable number.

140331223243421 is a deficient number, since it is larger than the sum of its proper divisors (25577612118499).

140331223243421 is an equidigital number, since it uses as much as digits as its factorization.

140331223243421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691286814043.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 140331223243421 its reverse (124342322133041), we get a palindrome (264673545376462).

The spelling of 140331223243421 in words is "one hundred forty trillion, three hundred thirty-one billion, two hundred twenty-three million, two hundred forty-three thousand, four hundred twenty-one".